JPH0512447U - Plate bending device - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention provides a folding device for a paperboard or the like, which can easily change the setting angle of the guide pulley and adjust the running condition of the belt when changing the settings such as inner sticking and outer sticking. It is a thing. [Structure] By a pair of endless belts installed at different angles in the bending direction of the plate-shaped body on both sides in the width direction of the plate-shaped body supported in the horizontal direction, along the traveling direction of the plate-shaped body. In a belt-type folding device that bends the plate-shaped body, a plurality of guide pulleys on both sides that regulate a twist angle of the endless belt are sequentially fixed to respective fulcrum shafts in a state in which a predetermined phase is sequentially shifted, and the fulcrum is fixed. A plate-shaped body bending device configured so that the plurality of guide pulleys can be changed and set at the same time with a predetermined phase being shifted by rotation of a shaft.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for bending a plate-like body in a corrugated board sheet box making machine or the like.

[0002]

[Prior Art]

 6 and 7 are explanatory views of a bending process of a plate-shaped body and a setting position of a guide pulley (endless belt) corresponding to the plate-shaped body, and FIGS. 8 to 10 are conventional plate-shaped body bending devices. FIG. 3 is an explanatory diagram of a basic structure and a defect regarding a device. 6, 7 and 8 to 10 all exemplify a cardboard sheet box making machine. As shown in FIGS. 8 to 10, a publicly known general plate-shaped body bending device is located on both sides in the width direction (operating side, drive side) of the traveling plate-shaped body 10 along the traveling direction of the plate-shaped body. The endless belts 1 and 2 are configured so that they can be bent at a predetermined ruled line portion by a pair of endless belts 1 and 2 that are installed by sequentially changing the angle in the bending direction of the plate-like body. It is regulated by a plurality of sets of guide pulleys 3 and 4 arranged in parallel in the traveling direction of the plate-like body. Now, the plate-like body (corrugated cardboard sheet) 10 having the slotting groove and the ruled line K processed in the previous step is inserted into the gap between the conveyor belts 14 and 15 and the endless belts 1 and 2 from the direction of the arrow. The transfer belts 14 and 15 are transferred to the downstream side by frictional force, and are sequentially bent in the process of traveling from S to P in FIG. It is designed to be attached to each other. FIG. 6 is a cross-sectional view of the folding device in the width direction, in which 14 and 15 are conveyor belts.

Guide pulleys 3 and 4 for guiding the endless belts 1 and 2 are pivotally supported by a shaft shaft 18 fixed to a sliding shaft 16 via an arm 17, and the sliding shaft 16 is supported by a bracket 19. By sliding the slider, the guide pulleys 3 and 4 can be moved in the axial direction, and can be rotated and slid to some extent with the sliding shaft 16 as a fulcrum. Further, the bracket 19 is axially supported by the shafts 5, 6 attached to the frame via bearings 20, so that the set angles of the guide pulleys 3, 4 can be varied and fixed at any angle. ing.

As described above, the guide pulley device configured as described above has a plurality of sets on both sides in the width direction (operating side and driving side) of the plate body 10 and along the traveling direction of each side plate body. It is arranged. Next, Fig. 7 shows the form of pasting. When inside is pasted, it is formed by the steps of (a), (b), (f), (to), and (h), and conversely it is put on the outside. Time is formed by the steps of (a), (b), (c), (d), and (e).

[0005] This change of the bonding form is made by changing the gluing position (the front and back of the plate-shaped body) in the previous process and the endless belts 1 and 2 on both sides of the plate-shaped body 10, that is, the guide pulleys 3 and 4 groups. This can be done by changing (switching) the relative angle of. In the conventional plate-shaped body bending apparatus, each of the guide pulleys 3 and 4 arranged side by side in the plate-shaped body advancing direction can be adjusted independently of the others, and fine adjustment is possible. There were various functional problems, such as the need for sophisticated technology for adjusting each set, and the long time required for correction of the belt running condition which is not reproducible.

[0006]

[Problems to be solved by the device]

 As described in the section of the prior art, the conventional belt-type plate-shaped body bending apparatus is an endless belt that is run along the traveling direction of the plate-shaped body while sequentially changing the angle in the bending direction. The multiple sets of guide pulleys that regulate the twisted state are configured to be adjusted individually. For example, the following problems occur when changing the settings for inside and outside attachment. (1) The set angle of each guide pulley corresponding to the sheet size (panel ratio of both sides) is not standardized, and high level skill (experience, skill) is required for each angle adjustment. (2) After the device is stopped and the angle of the guide pulley group is changed, it is necessary to inspect and correct the belt running condition (tension, meandering, etc.) during the trial run, and adjustment takes time. (3) In connection with the above items (1) and (2), it takes a long time to change the setting, so that it is impossible to shorten the time for the order change.

The present invention solves these problems in the prior art and makes it easy to change the setting angle of the guide pulley and adjust the running condition of the belt when changing the settings such as inner and outer sticking. It is an object of the present invention to provide a bending device.

[0008]

[Means for Solving the Problems]

 By a pair of endless belts, which are located on both sides of the plate in the width direction (operating side and drive side) and which are installed at different angles in the bending direction of the plate along the forward direction of the plate. In a belt-type folding device configured to fold a plate-like body, a plurality of sets of guide pulleys on both sides that regulate the angle of the endless belt are sequentially shifted in a prescribed phase, and are attached to the corresponding fulcrum shafts. It is fixed in advance so that the guide pulleys in each row can be collectively changed and set at the set phase by setting the angle of each fulcrum shaft.

Further, each fulcrum shaft that swings the guide pulley group is provided with a rotation angle detection means and a rotation means so that a change setting can be automatically performed.

[0010]

[Action]

 By setting a pair of fulcrum shafts arranged side by side in the width direction (operating side, drive side) of the plate-like body to a predetermined phase, a plurality of sets of guide pulleys attached to each side will have a phase shift that was initially adjusted. Are set at the same time. Further, since the relative positional relationship of the plurality of sets of guide pulleys does not change, the widthwise deviation (movement in the widthwise direction) of the endless belts guided and traveling is eliminated. If the pair of rotary shaft phases are replaced with each other, the corrugated paperboard (plate-like body) can be easily set to be stuck inside or outside.

[0011]

Embodiments FIGS. 1 to 4 are structural explanatory views of an embodiment of a plate-shaped body bending apparatus according to the present invention. FIG. 5 is a structural explanatory view of another embodiment of the present invention. 1 to 4 and 5 all illustrate a cardboard sheet box making machine. Corrugated cardboard sheets (plate-like bodies) that have been sequentially discharged one by one from the paper feed unit are subjected to predetermined processing such as printing, scoring, slotting grooves, and gluing, and then transported further downstream to the plate-shaped body. The plate-like body is bent by a pair of endless belts which are located on both sides (operating side and drive side) and which are installed by changing the angle in the plate-like body bending direction sequentially along the plate-like body moving direction. A series of functions as a corrugated ball sheet box making machine which is formed as a box folded through the attached glue is the same as that described in the related art in FIGS. 6 to 10.

1 to 4, a plurality of sets of guide pulleys 3a to 3e and 4a to 4e for guiding the bending endless belts 1 and 2 are arranged with a predetermined phase on both sides in the traveling direction of the plate-shaped body. The guide pulleys are installed and fixed to the fulcrum shaft 5 and the fulcrum shaft 6 which are the swing center of each guide pulley group. Therefore, the rotation of the fulcrum shafts 5 and 6 allows the groups of guide pulleys 3 and 4 on each side (5 sets in this embodiment) to move in conjunction with each other.

The fulcrum shafts 5 and 6 can be freely rotated by operating a lever 7 provided so as to project on the shafts 5 and 6, and the mounting angles of the guide pulleys 3 and 4 can be changed, and at any angle. It can be fixed in place. In the figure, 8 is a handle for locking the fulcrum shafts 5 and 6. Based on the above structure, the inner sticking and the outer sticking can be set by rotating the fulcrum shafts 5 and 6 on the operating side and the driving side to a preset angle by, for example, a stopper 9 and fixing them. In order to switch between inner sticking and outer sticking in accordance with the change, the phases of the fulcrum shafts 5 and 6 may be replaced with each other by operating the lever 7, and the fulcrum shaft lock handle 8 may be used for fixing. Regarding the angles of the five guide pulleys 3 and 4 installed on each side, the bending angle is sequentially changed in the bending direction along the traveling direction of the plate-shaped body 10, and the guide endless belts 1 and 2 guide the 180 degrees. The endless belts 1 and 2 traveling in contact with the outer circumference of the pulleys are adjusted at the same time (tension, meandering, etc.) so that they can be folded up to °. Therefore, the reproducibility after the completion of the switching between the inner sticking and the outer sticking is assured, and the operation of correcting again is unnecessary.

Next, in the embodiment shown in FIG. 5, the angle of the fulcrum shafts 5 and 6 is changed in order to save the operator's labor in operating the lever 7 and the motor 11 connected to the fulcrum shafts 5 and 6, The rotary encoder (12) provided at the shaft ends of the fulcrum shafts 5 and 6 is configured to automatically perform the rotation. The rotary encoder 12 detects the rotation angle from the reference phase, and the control device By feeding back to the motor 11 via 13 and controlling it, the desired angle can be adjusted and set.

As means for rotating the fulcrum shafts 5 and 6, instead of the motor 11, a solenoid valve and an air cylinder are incorporated, and the expansion and contraction of the air cylinder is used to reciprocate the rack fixed to the cylinder head. The pinion fixed to the fulcrum shafts 5 and 6 is engaged to rotate. Alternatively, various methods such as swinging an arm attached to a fulcrum shaft via an air cylinder to rotate the fulcrum shafts 5 and 6 are conceivable. (Not shown) The function of expanding and contracting the guide pulleys 3 and 4 in the axial direction in order to properly match the shape of the box to be manufactured, and the variable initial angle of the guide pulleys 3 and 4 fixed to the fulcrum shafts 5 and 6. Functions and the like are the same as those of the prior art shown in FIGS. 6 to 10.

[0016]

[Effect of the device]

 The plate bending apparatus according to the present invention sequentially changes the angle in the bending direction of the plate on both sides in the width direction of the plate supported in the horizontal direction along the traveling direction of the plate. In a belt-type bending device that bends the plate-shaped body by a pair of installed endless belts, a plurality of guide pulleys on both sides that regulate the twist angle of the endless belt are sequentially shifted in a predetermined phase. It is fixed to the fulcrum shaft in advance, and by rotating the fulcrum shaft, it is possible to change and set the plurality of guide pulleys at the same time with a predetermined phase shift. When changing the setting of, the following effects are obtained. (1) The setting change can be completed in a short time. (2) Guides that sequentially change the phase along the traveling direction of the plate-like body (corrugated cardboard sheet) Since the pulley group is attached at a predetermined angle in advance, individual adjustments are not required after changing the settings, and the operator's skill Does not require (experience, skill). (3) If the setting change of the guide pulley group is completed, the running stability of the endless belt will be guaranteed at the same time, and fine adjustment by trial operation will not be necessary. (4) When the rotation of the fulcrum shaft to which each guide pulley group is fixed is controlled via a rotary encoder, a motor, etc., it is possible to fully automate the setting change of inner sticking and outer sticking. (5) It is expected that productivity will be greatly improved by shortening the time related to setting changes.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line CC of FIG.

FIG. 3 is a sectional view taken along the line DD of FIG.

4 is a cross-sectional view taken along the line EE of FIG.

FIG. 5 is a side view of an essential part of another embodiment of the present invention.

FIG. 6 is a front view showing a bending operation of the plate-shaped body.

FIG. 7 is a diagram showing a step of bending a plate-shaped body.

FIG. 8 is a side view of a conventional device.

9 is a cross-sectional view taken along the line AA of FIG.

10 is a sectional view taken along the line BB of FIG.

[Explanation of symbols]

 1 Endless Belt 2 Endless Belt 3 Guide Pulley 4 Guide Pulley 5 Support Shaft 6 Support Shaft 7 Lever

Claims (1)

[Scope of utility model registration request] 1. A pair of endless members, which are installed on both sides in the width direction of a plate member supported in the horizontal direction along the traveling direction of the plate member, with the angle being sequentially changed in the bending direction of the plate member. By the belt, in a belt-type folding device that bends the plate-shaped body, a plurality of guide pulleys on both sides for restricting the twist angle of the endless belt are fixed in advance to each fulcrum shaft in a state of sequentially shifting a predetermined phase, A plate-shaped body bending apparatus, wherein the plurality of guide pulleys can be simultaneously changed and set in a state where a predetermined phase is shifted by rotation of the fulcrum shaft.